package com.xiaoze.springcloud.filter;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.jwt.Jwt;
import org.springframework.security.jwt.JwtHelper;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.time.LocalDateTime;

/**
 * @author xiaoze
 * @date 2020/5/12
 */
@Slf4j
@Component
public class GatewayFilter implements GlobalFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        log.info("****** come in MyLogGateWayFilter: " + LocalDateTime.now());
//        // 不能修改相应头，只能微服务各自解析
//        // Bearer eyJhbGciOiJSUz格式差不多这样，获取后面的
//        String str = exchange.getRequest().getHeaders().getFirst("Authorization");
//
//        assert str != null;
//        String [] arr = str.split("\\s+");
//
//        String authorization = arr[1];
//        Jwt decode = JwtHelper.decode(authorization);
//        JSONObject jsonObject = JSON.parseObject(decode.getClaims(), JSONObject.class);
//        System.out.println(JSON.toJSONString(jsonObject));


//        String uname = exchange.getRequest().getQueryParams().getFirst("uname");
//        if(uname == null) {
//            log.info("*****用户名为null，非法用户，o(╥﹏╥)o");
//            exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE);
//            return exchange.getResponse().setComplete();
//        }
        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 999;
    }

}
